11kV Compact Switchgear. tec - range. Minimum to Zero SF6 Insulation Gas. Outec Controls

Transcription

1 11kV Compact Switchgear tec - range Minimum to Zero SF6 Insulation Gas. Outec Controls 1

2 tec xx - 11kV Switchgear Contents 1 tec CB - SF6 Free Switchgear Description: Features the Breaker UNIT... 3 Interrupter: Type test: Safety: Indication: Operation Remote indication Application: Cable connection: Technical schedule... 5 tec Busbars System tec RMC - RMUs with Minisub RMU s Cable Terminations for Type C connectors 630 Amps 12kV Flexible connector... 8 Unscreened Silicone bushings Fully screened Bushings Fuse detail: tec VT - Voltage Transformer Detail Type tec VT2 12A 11 R (11kV primary with Fuse protection) Type tec VTY 12A 11 R (11kV primary with Fuse protection) tec Drawings (Typical Installation) tec Configurations tec Ordering Information

3 1 tec CB - SF6 Free Switchgear 1.1 Description: Solid Insulated switch is a kind of intelligent, environment-friendly and all conditions switch. With highly reliable safety. It is a fixed pattern design. It is applicable to secondary power distribution system in the voltage range 11KV. It is completely without SF6 gas and other harmful gases. It is without use of any pressure vessel. It is friendly to environment and person. It has advantages of full insulation, long life-time, no maintenance, small size, reliable safety, and it is also not affected by the environment 1.2 Features the Breaker UNIT Solid insulated switch is the core of solid insulated ring main switchgear. The switch is designed to integrate vacuum breaker or load switch, disconnector and earthing switch. The structure is compact which includes front side and back side. The front side is operation mechanism, the back side is primary part. Solid insulated switch can be different functional units with switchgear as a module, multiple modules has same structure, same operation. 1.3 Interrupter: Integrated pole, three phase design, and high creep-age distance. Excellent electric field performance It adopt vacuum arc extinguisher, breaker type disconnector, earthing switch making, cutting head design, special materials, 2 times short-circuit making, 5 times shortcircuit making on upper earthing solution by vacuum making. Switch body protection grade is IP67, it passed 48 hours diving test. Outgoing cable of main busbar and power cable use standard European TYPE C contact, it is easy to close the switchgear with reliable safety. Special insulation material of epoxy resin: a) High mechanical intensity; b) Anti-crack property, heat shrinkable property, thermal conductivity, aging resistance is good; c) More than 110 verification temperature makes th e epoxy resin keep insulation capacity in working condition of high temperature. d) Low moisture penetration performance Special design of fuse structure reduces partial discharge effectively; it is convenient to change fuse and prevent vapour into fuse unit, which improve the security of long running. It is convenient to open the panel, change parts or check circuit. Disconnector has function of electric operation, which can realize distribution network automation. Disconnector, earthing switch has independent operation hole, and it can be equipped with active lock, padlock or electromagnetic lock. With the inspection window it is possible to have visual verification on the disconnector. The switch is designed to integrate a Vacuum Breaker (interrupter) Disconnector and Earthing switch air insulated. 1.4 Type test: 3

4 1.5 Safety: Mechanical interlock between CB ---- Disconnector and Earth Switch 1.6 Indication: 1) Mechanical Flag indication - part of Mimic 2) Actual visual indication of contacts in CB Chamber 3) Cable alive indication -- 3) Status of the closing and opening spring VPI (Voltage Presence indication) 1.7 Operation 1) CB Mechanical with winding handle (Wind Spring manually and then close) 2) The Disconnector (LBS) and Earth switch can only be operated manually 3) CB Electrical can be operated Electrically with Rewind Motor 4) Open and close can be mechanical as well as electrical This buttons can be locked 5) Electrical open and close coils voltages (24, 48, 110 VDC) 6) CB can be remotely operate 1.8 Remote indication Auxiliary potential free contacts from: CB, Disconnector and Earth switch 2 x Change over Contacts 1.9 Application: Is applicable widely to industrial mining and distribution applications. It is especially suitable for switching station, industrial, mining, airport, railway, commercial zone, high buildings etc 4

5 1.10 Cable connection: All cable termination are type "C" connections 630/1250 Amps Unit suitable for single or 3 core MV cables Technical schedule Item CB Unit Circuit Breaker IS Unit Disconnect or F Unit Fuse Unit Rated voltage (kv) Rated Current (A) 630 / / Rated Frequency (Hz) 50 Power frequency withstand voltage (kv), phase-to-phase, phase to earth/open contact 42/48 Lighting impulse withstand voltage (kv) Phase-to-phase, phase to earth/open contact 75/85 Rated short-circuit breaking current(ka) AC 25 / 3 sec Rated short-circuit breaking current(ka) DC 51% Rated short-circuit breaking current DC time const 45 ms Operating sequence O 0.3s CO 180s - CO - Rated peak withstand current (ka) 80 Rated short time making current (ka) 80 Rated breaking transfer current(a) 3150 Internal arc test AFLR level (ka/s) 25/0.5 Partial discharge (pc) </- 20 Protection level body/switch IP4X/IP67 Circuit Breaker Manufacturer Comking Zhuhai Main circuit resistance (µω) </-150 </-150 </-150 Mechanical life (times) main switch/disconnector 10000/ / /3000 Spring wind status Manual Spring rewind Lockable Manual Open & Close Buttons Lockable Isolator Manual Operator Lockable Earth SW Manual Operator Visual indication of disconnector and Earth switch Light Push Button for visual indication 5 VPI (Voltage Presence Indication )

6 1.12 tec Busbars System 630 Amps or 1250 Amps 11kV Busbars available Applications: Switch panels are connected via fully insulated or Screened Busbars. For 1250 Amp ratings the busbar will be double tier. The connections on the switchgear is a type C Via switchgear bushing, the busbars enable connections among switchgears. Max system operating voltage 15kV/24kV Characteristics: Able to provide fully-insulated and fully-sealed separable connections with type matched bushing. Single pole and plug-in design. The busbar consists of round copper bars (tubes) and is covered with a composite silicone rubber insulating layer. End connectors and cross joints with silicone rubber insulation are used for connection with the busbars The shielded busbar is free of requirement on least phase distance and effects of contamination and condensate leakage. The unshielded busbar should be mounted with a shield. Characteristics: Able to provide fully-insulated and fully-sealed separable connections with type matched bushing. Single pole and plug-in design. The busbar consists of round copper bars (tubes) and is covered with a composite silicone rubber insulating layer. End connectors and cross joints with silicone rubber insulation are used for connection with the busbars The shielded busbar is free of requirement on least phase distance and effects of contamination and condensate leakage. The unshielded busbar should be mounted with a shield.. 6

7 2 tec RMC - RMUs with SF6 Free CB with Minimum volume SF6 LBS (Fully SF6 RMU (11kV 630 Amps & 125 Amps Are available) 2.1 Minisub RMU s Side view Front view L Unit - Load Break Switch (LBS) minimum SF6 Chamber C Unit - LBS with CB (630 Amps 11kV) (All modules are 420 wide) C+C+C (H-1320 D-944 W-1260) L+L+C (H-1320 D-944 W-1260) L+C (H-1320 D-944 W-840) L+C+C (H-1320 D-944 W-1260) This units can be extended both sides (standard) and if necessary unit can be changes or replaced 7

8 3 Cable Terminations for Type C connectors 630 Amps 12kV The one thing that is not recommended (actually forbidden) is Putty and Tape terminations There are three types recommended: 1) Flexible connector 2) Unscreened Silicon bushings 3) Fully screened Bushings. 3.1 Flexible connector These are Pre-moulded Un-Screened silicone insulating bushing boots. This is to be used on type C MV bushings up to a voltage of 12kV Normal Heat Shrink terminations are used. High quality Lugs is required or Normal Heat shrink terminations is used. 3.2 Unscreened Silicone bushings These are insulated T-shaped (right angled) pre-moulded un-screened silicone bushing boots suitable for use on 12kV Type C 630A bushings. It has a very compact profile, making It is suitable for use in compact gasinsulated secondary switchgear. This is where the spacing between bushings is significantly reduced. The pre-moulded shape ensures optimal/full contact over the entire Type C bushing profile thus improving its ability to eliminate unwanted leakage currents. For type 1 and 2 : Normal Heat Shrink terminations High quality Lugs is required or Mechanical Lugs (torque-cheer) Type 3 will be supplied with connecting bolt and Mechanical Lugs 3.3 Fully screened Bushings. 8

9 4 Fuse detail: 9

10 5 tec VT - Voltage Transformer Detail. Cast resin Voltage Transformers. Standard Voltage types available 11/0.11 kv On request 11r3/0.11r3 kv Typical VA ratings VA 1, 2, 3 secondary windings Accuracy type Class 2, 1, 0.5 and 0.2 Cable connections o Type A screened cable connector Fuse Protected. 5.1 Type tec VT2 12A 11 R (11kV primary with Fuse protection) 5.2 Type tec VTY 12A 11 R (11kV primary with Fuse protection) 10

11 6 tec Drawings (Typical Installation) 11

12 7 tec Configurations Solid Incomer LU - 3 Disconnector only (LBS) L Unit DC - 2 CB with Disconnector (LBS) CB - 0 CB (LBS) and VT) CV - 8 Fused Unit FU - 7 All units are extendable both ways. 12

13 8 tec Ordering Information tec Type Panel Operation Current Rating Fault Current Fault Current: 20 ka 25 ka 31.5 ka Current Rating: Amps Amps Operation: N - Manual (Non-Motorised ) M - Motorised Code: 01 Design No. (420-W 1600-H 780-D) 02 - Design No. (420-W 1320-H 780-D) 03 Design No. (420-W 1600-H 940-D) 04 - Design No. (420-W 1320-H 940-D) Type: CB Circuit Breaker (Solid Insulation unit) DC Disconnector (Solid Insulation unit) C1 Direct BB Connect (Concealed Link unit) C2 Direct BB Connect (Direct Cable connection) SW Section Switch (Solid Insulation unit) FU - Fuse Unit (Solid Insulation unit) L6 Load Break Unit (LBS Min SF6 Unit) LB Load Break Unit (No SF6 Insulation gas) M1 Metering unit (No SF6 Insulation gas) Postal : Office/ Delivery Office Tel. +27 (0) P.O. Box Calliandra Street Mobile. No. +27 (0) Montanapark, Pretoria, 0159 Montana Fax. +27 (0) outec@outec.co.za Pretoria